Study on vibration response characteristics of turbine blade for turbo-charger
In the mechanical design of a turbine blade for an automotive turbo-charger, it is pointed out that the mistuning effect caused by the difference of the casting condition should be considered. Namely, the difference of the casting condition causes the small variation of Young's modulus of e...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2019-04-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/85/873/85_18-00425/_pdf/-char/en |
| _version_ | 1798015081485697024 |
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| author | Yasutomo KANEKO Kazushi MORI Motoki EBISU Shinji OGAWA Tomoaki TAKESHITA |
| author_facet | Yasutomo KANEKO Kazushi MORI Motoki EBISU Shinji OGAWA Tomoaki TAKESHITA |
| author_sort | Yasutomo KANEKO |
| collection | DOAJ |
| description | In the mechanical design of a turbine blade for an automotive turbo-charger, it is pointed out that the mistuning effect caused by the difference of the casting condition should be considered. Namely, the difference of the casting condition causes the small variation of Young's modulus of each blade on a turbine wheel. These small variations break the cyclic symmetry, and split the eigenvalue pairs. In the forced response of a mistuned system, the responses of all blades become different, and the response of a certain blade may become extremely large due to splitting of the duplicated eigenvalues and distortion of the vibration modes. In this study, the reduced order model FMM (Fundamental Mistuning Model) is applied to evaluate the resonant response of mistuned system. First, the frequency response analysis of mistuned system is carried out, using both of the FMM and the direct FEM, and the calculated results are compared to confirm the validity of the FMM. Second, the frequency response analysis of mistuned system is carried out using the FMM, the Monte Carlo simulation and the optimal method to examine the effect of various parameters on the maximum response of a mistuned system. In addition, the effect of the intentional mistuning on the reduction of the maximum response is researched using the genetic algorithm. |
| first_indexed | 2024-04-11T15:28:41Z |
| format | Article |
| id | doaj.art-1963320d75c54e3cab5e721ff393a829 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T15:28:41Z |
| publishDate | 2019-04-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-1963320d75c54e3cab5e721ff393a8292022-12-22T04:16:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612019-04-018587318-0042518-0042510.1299/transjsme.18-00425transjsmeStudy on vibration response characteristics of turbine blade for turbo-chargerYasutomo KANEKO0Kazushi MORI1Motoki EBISU2Shinji OGAWA3Tomoaki TAKESHITA4Department of Mechanical and Systems Engineering, Ryukoku UniversityMitsubishi Heavy Industries, Ltd.Mitsubishi Engine & Turbocharger Ltd.Mitsubishi Heavy Industries, Ltd.Mitsubishi Heavy Industries, Ltd.In the mechanical design of a turbine blade for an automotive turbo-charger, it is pointed out that the mistuning effect caused by the difference of the casting condition should be considered. Namely, the difference of the casting condition causes the small variation of Young's modulus of each blade on a turbine wheel. These small variations break the cyclic symmetry, and split the eigenvalue pairs. In the forced response of a mistuned system, the responses of all blades become different, and the response of a certain blade may become extremely large due to splitting of the duplicated eigenvalues and distortion of the vibration modes. In this study, the reduced order model FMM (Fundamental Mistuning Model) is applied to evaluate the resonant response of mistuned system. First, the frequency response analysis of mistuned system is carried out, using both of the FMM and the direct FEM, and the calculated results are compared to confirm the validity of the FMM. Second, the frequency response analysis of mistuned system is carried out using the FMM, the Monte Carlo simulation and the optimal method to examine the effect of various parameters on the maximum response of a mistuned system. In addition, the effect of the intentional mistuning on the reduction of the maximum response is researched using the genetic algorithm.https://www.jstage.jst.go.jp/article/transjsme/85/873/85_18-00425/_pdf/-char/enturbomachineryforced vibrationblademistuningoptimal design |
| spellingShingle | Yasutomo KANEKO Kazushi MORI Motoki EBISU Shinji OGAWA Tomoaki TAKESHITA Study on vibration response characteristics of turbine blade for turbo-charger Nihon Kikai Gakkai ronbunshu turbomachinery forced vibration blade mistuning optimal design |
| title | Study on vibration response characteristics of turbine blade for turbo-charger |
| title_full | Study on vibration response characteristics of turbine blade for turbo-charger |
| title_fullStr | Study on vibration response characteristics of turbine blade for turbo-charger |
| title_full_unstemmed | Study on vibration response characteristics of turbine blade for turbo-charger |
| title_short | Study on vibration response characteristics of turbine blade for turbo-charger |
| title_sort | study on vibration response characteristics of turbine blade for turbo charger |
| topic | turbomachinery forced vibration blade mistuning optimal design |
| url | https://www.jstage.jst.go.jp/article/transjsme/85/873/85_18-00425/_pdf/-char/en |
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